論文 - 詳細
| RRC ID | 57459 |
|---|---|
| 著者 | Folk RA, Stubbs RL, Mort ME, Cellinese N, Allen JM, Soltis PS, Soltis DE, Guralnick RP. |
| タイトル | Rates of niche and phenotype evolution lag behind diversification in a temperate radiation. |
| ジャーナル | Proc Natl Acad Sci U S A |
| Abstract |
Environmental change can create opportunities for increased rates of lineage diversification, but continued species accumulation has been hypothesized to lead to slowdowns via competitive exclusion and niche partitioning. Such density-dependent models imply tight linkages between diversification and trait evolution, but there are plausible alternative models. Little is known about the association between diversification and key ecological and phenotypic traits at broad phylogenetic and spatial scales. Do trait evolutionary rates coincide with rates of diversification, are there lags among these rates, or is diversification niche-neutral? To address these questions, we combine a deeply sampled phylogeny for a major flowering plant clade-Saxifragales-with phenotype and niche data to examine temporal patterns of evolutionary rates. The considerable phenotypic and habitat diversity of Saxifragales is greatest in temperate biomes. Global expansion of these habitats since the mid-Miocene provided ecological opportunities that, with density-dependent adaptive radiation, should result in simultaneous rate increases for diversification, niche, and phenotype, followed by decreases with habitat saturation. Instead, we find that these rates have significantly different timings, with increases in diversification occurring at the mid-Miocene Climatic Optimum (∼15 Mya), followed by increases in niche and phenotypic evolutionary rates by ∼5 Mya; all rates increase exponentially to the present. We attribute this surprising lack of temporal coincidence to initial niche-neutral diversification followed by ecological and phenotypic divergence coincident with more extreme cold and dry habitats that proliferated into the Pleistocene. A lack of density-dependence contrasts with investigations of other cosmopolitan lineages, suggesting alternative patterns may be common in the diversification of temperate lineages. |
| 巻・号 | 116(22) |
| ページ | 10874-10882 |
| 公開日 | 2019-5-13 |
| DOI | 10.1073/pnas.1817999116 |
| PII | 1817999116 |
| PMID | 31085636 |
| PMC | PMC6561174 |
| MeSH | Biodiversity* Biological Evolution* Ecosystem* Phenotype* Phylogeny Saxifragales / classification Saxifragales / genetics Saxifragales / physiology |
| IF | 9.58 |
| 引用数 | 12 |
| リソース情報 | |
| GBIF | Vascular plant specimens of Iida City Museum Plant specimens of Oiso Municipal Museum Herbarium of Hokkaido University Museum (SAPS) Vascular Plant Collection of Natural History Museum and Institute, Chiba Herbarium Specimens of Museum of Nature and Human Activities, Hyogo Pref., Japan Spermatophyta collection of Museum of Natural and Environmental History, Shizuoka Ibaraki Nature Museum, Vascular Plants collection Vascular plant specimens of National Museum of Nature and Science (TNS) Plant Specimens of Kurashiki Museum of Natural History Herbarium Specimens of Tokushima Prefectural Museum, Japan Herbarium of Kitakyushu Museum of Natural History and Human History Plant Specimens of Lake Biwa Museum Spermatophyta specimens of Iwate Prefectural Museum Vascular Plants Collection of Sagamihara City Museum Plant specimens in the Museum of Nature and Human Activities, Hyogo Prefecture, Japan Plant specimens of Taga Town Museum, Shiga Pref., Japan Plant specimens deposited in Osaka Museum of Natural History, Japan Vascular Plant Specimens of Kochi Prefectural Makino Botanical Garden Plant Specimens of The Shimane Nature Museum of Mt. Sanbe Vascular Plant Specimen database of Kanagawa Prefectural Museum of Natural History Gunma Museum of Natural History, Vascular Plant Specimen Monitoring records of plant species in the Hakone region of Fuji-Hakone-Izu National Park, Japan, 2001-2010 Herbarium Specimens of Bonin and Ryukyu Islands Plant Observation Records of Japan Tracheophyta collection of Biodiversity Center of Japan, Ministry of the Environment Plant Specimen Database of Tama Forest Science Garden, Forestry and Forest Products Research Institute, Japan Plant Specimens collections of the Kyushu University Museum Vascular Plants Collection of National Museum of Nature and Science Vascular plant specimens of Akita Prefectural Museum Herbarium, University Archives and Collections, Fukushima University, Japan (FKSE) Angiospermatatophytina Collection of Saitama Museum of Natural History |